Call drops when client answer

Call drops when client answer

Lync Server 2013

AudioCodes

Skype for Business 2016

VVX310 & VVX500

One of our users is having an issue calling a specific client. When the client answers, the call drops right away. The user is able to call everyone else with no issues and everyone else in the office is able to call the same client with no issue. We thought it was the client side that was having the issue but their IT department came back stating that everything looks good on their end.

We decided to investigate further.

1. Deleted and re-created the user's Lync account, but did not fix the issue.

2. We replaced the user's Polycom VVX310 with a VVX500 which seems to resolve the issue temporarily. The issue came back within a couple of months.

3. We also tried calling it with a headset and the call went through.

4. In our traces we see the INVITE go to the phone, Trying/Ringing come back, followed by the OK, and we send the ACK, and then the phone sends BYE.

Re: Call drops when client answer

It is always useful to include the currently used UC Software version as issues experienced or a question asked may already be addressed in a newer release.

This also allows yourself and others to check against current software release notes, Administrator Guides or FAQ post’s.

The above is also stated in the "Must Read First" and is the absolute minimum requirement every new post should include. .

In addition providing us with this basic information gives Polycom an idea what Software Versions are used in the field and avoids wasting time trying to troubleshoot issues which have already been addressed.

Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.

Best Regards

Steffen Baier

Polycom Global Services

Please be aware:

The purpose of these forums is to allow community members collaborate and help each other. Questions posted here do not follow Polycom’s SLA guidelines. If you require assistance from Polycom technical support, please open a web service request or call us .

The above is necessary in order to track issue internally within Polycom.

You are welcome to post more questions or configuration or logs for other community members to look at but if your issue requires a fix via Polycom you must go via the official support structure.

Please remember, if you see a post that helped you , and it answers your question, please mark it as an "Accept as Solution".

This forum reply or post is based upon my personal experience and does not reflect the opinion or view of my employer.Polycom employee participation within this community is not mandatory and any post or FAQ article provided by myself is done either during my working hours or outside working hours, in my private time, and may be answered on weekends, bank holidays or personal holidays.

Re: Call drops when client answer

The log snippet you posted does not contain any call or useful information either.

Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.

Best Regards

Steffen Baier

Polycom Global Services

Please be aware:

The purpose of these forums is to allow community members collaborate and help each other. Questions posted here do not follow Polycom’s SLA guidelines. If you require assistance from Polycom technical support, please open a web service request or call us .

The above is necessary in order to track issue internally within Polycom.

You are welcome to post more questions or configuration or logs for other community members to look at but if your issue requires a fix via Polycom you must go via the official support structure.

Please remember, if you see a post that helped you , and it answers your question, please mark it as an "Accept as Solution".

This forum reply or post is based upon my personal experience and does not reflect the opinion or view of my employer.Polycom employee participation within this community is not mandatory and any post or FAQ article provided by myself is done either during my working hours or outside working hours, in my private time, and may be answered on weekends, bank holidays or personal holidays.